PRIME AND FIRE LANCING DEVICE WITH CONTACTING BIAS DRIVE AND METHOD
Described and illustrated herein is an exemplary lancing device. The lancing device includes a first housing, second housing, movable member, lancet, and lancet depth adjustment member. The lancet depth adjustment member is captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member. Other exemplary embodiments are also described.
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This application claims the benefits of priority of U.S. Provisional Patent Application Ser. No. 61/052,069 filed on May 9, 2008.
BACKGROUNDConventional lancing devices generally have a rigid housing, various operating mechanisms and a lancet that can be armed and launched so as to briefly protrude from one end of the lancing device. For example, conventional lancing devices can include a lancet that is mounted within a rigid housing such that the lancet is movable relative to the rigid housing along a longitudinal axis thereof. Typically, the lancet is spring loaded and launched, upon release of the spring, to penetrate (i.e., “lance”) a target site (e.g., a dermal tissue target site). A bodily fluid sample (e.g., a whole blood sample) can then be expressed from the penetrated target site for collection and analysis.
Conventional lancing devices typically require a user to arm the lancing device, urge the lancing device against a target site, and then press a button or other switch to manually activate the lancing device such that a lancet within the device is launched (also referred to as “fired”) towards the target site. The lancet then penetrates (e.g., lances) the target site, thereby creating an opening for the expression of a bodily fluid sample.
The arming and launching of conventional lancing devices involves a multitude of complicated mechanisms that result in the lancing device being relatively large in size, costly to manufacture and cumbersome to operate. In addition, the operation of conventional lancing device mechanisms can induce both vibrations within the lancing device and sounds that increase the level of pain perceived by a user.
SUMMARY OF THE DISCLOSUREApplicants have recognized a need for a lancing device that is relatively inexpensive to manufacture and easily operated. Such device must also produce a minimal amount of vibration and/or sound during use, thereby decreasing the level of pain perceived by a user.
In accordance with one aspect, there is provided a lancing device that includes a first housing, second housing, movable member, lancet, and lancet depth adjustment member. The first housing has spaced apart proximal and distal ends disposed along a longitudinal axis. The second housing is disposed in the first housing in a fixed relationship with the first housing. The movable member is disposed in the second housing and configured for movement along the longitudinal axis and in the first housing. The lancet is coupled to the movable member. The lancet depth adjustment member is captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.
In yet another aspect, a lancing device is provided that includes a first housing, second housing, movable member, bias member, first actuator, second actuator, and a lance. The first housing has spaced apart proximal and distal ends disposed along a longitudinal axis. The second housing is disposed in the first housing in a fixed relationship with the first housing. The movable member is disposed in the second housing and configured for movement along the longitudinal axis in the first housings. The bias member is located in the second housing to bias the moveable member in a direction towards the distal end. The first actuator is coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position. The second actuator is carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end. The lancet is coupled to the movable member.
In yet a further aspect, a lancing device is provided that includes a housing, a lancet, a movable member, and a collet. The housing has spaced apart proximal and distal ends disposed along a longitudinal axis. The lancet has a body and a lancing projection, at least the body being disposed in the housing. The movable member is disposed in the housing and configured for movement along the longitudinal axis. The moveable member includes a plurality of arms extending away from the longitudinal axis. The collet is mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.
In an embodiment, the lancing device further includes: a first bias member located in the second housing to bias the moveable member in a direction towards the distal end; a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a prime position; and a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the prime position to a position proximate the distal end.
In an embodiment, the moveable member has a plurality of arms extending away from the longitudinal axis towards the distal end; and the lancing device further includes: a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.
In an embodiment, the lancing device further includes a lancet ejection mechanism including a third actuator mounted to the first housing. The third actuator being disposed in: a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.
In an embodiment, the lancing device further includes: a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.
In an embodiment, the lancing device further includes: a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.
In an embodiment, the first housing includes two halves connected together.
In an embodiment, the second housing includes a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.
In an embodiment, the lancing device further includes: a second bias member configured to bias the moveable member in a direction towards the proximal end.
In an embodiment, the moveable member includes at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.
In an embodiment, the second bias member includes a helical spring disposed outside the second housing and connected to the at least one return arm.
In an embodiment, the lancing device further includes: a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.
In an embodiment, the first bias member is selected from a group consisting of springs, magnets, or combinations thereof.
In an embodiment, the second bias member is selected from a group consisting of springs, magnets, or combinations thereof.
In yet another aspect, a method of operating a lancet can be achieved translating, via a hand, a movable member disposed inside a housing along a longitudinal axis in a first direction to a prime position in which the movable member is locked into a prime position against a force biasing the moveable member in a second direction opposite the first direction; unlocking, with the same hand, the moveable member from the prime position to allow the biasing force to cause the moveable member to move a lancet constrained to the moveable member in the second direction towards a target site; rotating a collar about the housing with the same hand until a groove is aligned with an ejection actuator; and moving, with the same hand, the ejection actuator into the groove to move the moveable member into a position in which the lancet is no longer constrained to the moveable member.
In yet a further aspect, a lancing device is provided that includes first and second housings, a moveable member, and a depth adjustment member. The first housing has spaced apart proximal and distal ends disposed along a longitudinal axis. The second housing is disposed in the first housing in a fixed relationship with the first housing. The movable member is disposed in the second housing and configured for movement along the longitudinal axis. The lancet depth adjustment member limits a travel of the movable member along the longitudinal axis towards the distal end. The lancet depth adjustment member is captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.
In yet a further aspect, a lancing device is provided that includes first and second housings, a moveable member, a lancet, and a collet. The first housing has spaced apart proximal and distal ends disposed along a longitudinal axis. The second housing is disposed in the first housing in a fixed relationship with the first housing. The movable member is disposed in the second housing and configured for movement along the longitudinal axis. The movable member is disposed in the second housing and configured for movement along the longitudinal axis. The moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end. The lancet has a body and a projection extending from the body of the lancet, the body of the lancet capable of being disposed in a volume defined by the plurality of arms of the moveable member. The collet is mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is not constrained by the plurality of arms.
These and other embodiments, features and advantages will become apparent to those skilled in the art when taken with reference to the following more detailed description of the invention in conjunction with the accompanying drawings that are first briefly described.
The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate presently preferred embodiments of the invention, and, together with the general description given above and the detailed description given below, serve to explain features of the invention (wherein like numerals represent like elements), of which:
The following detailed description should be read with reference to the drawings, in which like elements in different drawings are identically numbered. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the invention. The detailed description illustrates by way of example, not by way of limitation, the principles of the invention. This description will clearly enable one skilled in the art to make and use the invention, and describes several embodiments, adaptations, variations, alternatives and uses of the invention, including what is presently believed to be the best mode of carrying out the invention.
When assembled, second housing 700, first housing bottom 1100, first housing top 1200, and band 1300 are fixedly attached to each other, while cap 200, lancet depth adjustment member 300, collar 400, collet 500, third bias member 102, movable member 600, first bias member 104, second bias member 106, second actuator 800, first actuator 900, and third actuator 1000 are coupled, but are free to move in accordance with the description provided herein.
As illustrated in
As described below, cap 200, lancet depth adjustment member 300, collar 400, collet 500, third bias member 102, movable member 600, first bias member 104, second housing 700, second bias member 106, second actuator 800, first actuator 900, third actuator 1000, first housing bottom 1100, first housing top 1200, and band 1300 are operatively connected such that a target site (e.g., a user's skin target site) can be lanced with a lancet (e.g., lancet L that includes lancet needle N) held within lancing device 100. In this regard, lancing device 100 is configured to launch lancet L such that lancet needle N lances a target site with first actuator 900 being configured to prime lancing device 100 prior to firing lancing device 100 (i.e., prior to launching lancet L), while second actuator 800 is configured to actuate the firing of lancing device 100. Furthermore, lancet depth adjustment member 300 is configured for a user to select a predetermined needle penetration depth into a target site.
Lancing device 100 can be any suitable size but can be beneficially sized to fit within the palm of a user's hand and has, therefore, a typical but non-limiting length in the range of 50 mm to 70 mm and a typical but non-limiting width in the range of about 10 mm to about 20 mm. Such a compact size is beneficial in that it requires less storage space and is less conspicuous than conventionally sized lancing devices.
This feature is illustrated in
Having described various components of lancing device 100, details of the interaction and functioning of such components will now be described with reference to
In
In
While the invention has been described in terms of particular variations and illustrative figures, those of ordinary skill in the art will recognize that the invention is not limited to the variations or figures described. In addition, where methods and steps described above indicate certain events occurring in certain order, those of ordinary skill in the art will recognize that the ordering of certain steps may be modified and that such modifications are in accordance with the variations of the invention. Additionally, certain of the steps may be performed concurrently in a parallel process when possible, as well as performed sequentially as described above. Therefore, to the extent there are variations of the invention, which are within the spirit of the disclosure or equivalent to the inventions found in the claims, it is the intent that this patent will cover those variations as well.
Claims
1. A lancing device comprising:
- a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;
- a second housing disposed in the first housing in a fixed relationship with the first housing;
- a movable member disposed in the second housing and configured for movement along the longitudinal axis and in the first housing;
- a lancet coupled to the movable member; and
- a lancet depth adjustment member captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.
2. The lancing device of claim 1, further comprising:
- a first bias member located in the second housing to bias the moveable member in a direction towards the distal end;
- a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position; and
- a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end.
3. The lancing device of claim 2, in which the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end; and further comprising:
- a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.
4. The lancing device of claim 3, further comprising:
- a lancet ejection mechanism including:
- a third actuator mounted to the first housing, the third actuator being disposed in: a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.
5. The lancing device of claim 4, further comprising:
- a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.
6. The lancing device of claim 5, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.
7. The lancing device of claim 1, in which the first housing comprises two halves connected together.
8. The lancing device of claim 1, in which the second housing comprises a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.
9. The lancing device of claim 1, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.
10. The lancing device of claim 9, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.
11. The lancing device of claim 10, in which the second bias member comprises a helical spring disposed outside the second housing and connected to the at least one return arm.
12. The lancing device of claim 4, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.
13. The lancing device of claim 4, in which the first bias member comprises a resilient member in contact with the moveable member.
14. The lancing device of claim 10, in which the second bias member is selected from a group consisting of springs, magnets, or combinations thereof.
15. A lancing device comprising:
- a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;
- a second housing disposed in the first housing in a fixed relationship with the first housing;
- a movable member disposed in the second housing and configured for movement along the longitudinal axis and in the first housings;
- a bias member located in the second housing to bias the moveable member in a direction towards the distal end;
- a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position;
- a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end; and
- a lancet coupled to the movable member.
16. The lancing device of claim 15, in which the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end; and further comprising:
- a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.
17. The lancing device of claim 16, further comprising:
- a lancet ejection mechanism including:
- a third actuator mounted to the first housing, the third actuator being disposed in: a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.
18. The lancing device of claim 17, further comprising:
- a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.
19. The lancing device of claim 18, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.
20. The lancing device of claim 15, in which the first housing comprises two halves connected together.
21. The lancing device of claim 15, in which the second housing comprises a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.
22. The lancing device of claim 15, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.
23. The lancing device of claim 22, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.
24. The lancing device of claim 23, in which the second bias member comprises a resilient member disposed outside the second housing and connected to the at least one return arm.
25. The lancing device of claim 17, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.
26. The lancing device of claim 17, in which the first bias member comprises a resilient member in contact with the moveable member.
27. The lancing device of claim 23, in which the second bias member comprises a helical spring.
28. A lancing device comprising:
- a housing having spaced apart proximal and distal ends disposed along a longitudinal axis;
- a lancet having a body and a lancing projection, at least the body being disposed in the housing;
- a movable member disposed in the housing and configured for movement along the longitudinal axis, the moveable member includes a plurality of arms extending away from the longitudinal axis;
- a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.
29. The lancing device of claim 28, further comprising:
- a first bias member located in the housing to bias the moveable member in a direction towards the distal end;
- a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position; and
- a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end.
30. The lancing device of claim 29, further comprising:
- a lancet ejection mechanism including:
- a third actuator mounted to the housing, the third actuator being disposed in: a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.
31. The lancing device of claim 30, further comprising:
- a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.
32. The lancing device of claim 31, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.
33. The lancing device of claim 28, in which the housing comprises two halves connected together.
34. The lancing device of claim 28, further comprising a second housing in which the moveable member is disposed therein for movement in the second housing, the second housing comprising a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.
35. The lancing device of claim 34, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.
36. The lancing device of claim 35, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.
37. The lancing device of claim 36, in which the second bias member comprises a resilient member disposed outside the second housing and connected to the at least one return arm.
38. The lancing device of claim 30, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.
39. The lancing device of claim 30, in which the first bias member comprises a resilient member in contact with the moveable member.
40. The lancing device of claim 28, in which the second bias member comprises a helical spring.
41. A lancing device comprising: a lancet depth adjustment member that limits a travel of the movable member along the longitudinal axis towards the distal end, the lancet depth adjustment member being captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.
- a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;
- a second housing disposed in the first housing in a fixed relationship with the first housing;
- a movable member disposed in the second housing and configured for movement along the longitudinal axis; and
42. A lancing device comprising:
- a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;
- a second housing disposed in the first housing in a fixed relationship with the first housing;
- a movable member disposed in the second housing and configured for movement along the longitudinal axis, the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end;
- a lancet having a body and a projection extending from the body of the lancet, the body of the lancet capable of being disposed in a volume defined by the plurality of arms of the moveable member; and
- a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is not constrained by the plurality of arms.
Type: Application
Filed: May 5, 2009
Publication Date: Nov 12, 2009
Patent Grant number: 8932314
Applicant: LifeScan Scotland Ltd. (Inverness-Shire)
Inventors: Allan James FAULKNER (Avoch), Nicholas FOLEY (Edinburgh), David Colin CROSLAND (Edinburgh), Matthew James YOUNG (Edinburgh), Paul TRICKETT (Hamilton)
Application Number: 12/435,967
International Classification: A61B 5/151 (20060101);